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Bought T4850 High End Tuner a few years ago, but i didn't know where all the buttons were used for. So i purchased the owners manual. Perfect! Just what i needed.
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Bought the used Philips car-radio. No manual! Found on this site a copy of the orginal English manual. I am very happy with it. Now I know how to setup and use my "new" car-radio.
Recommended site for everybody looking for a manual for (older) products!
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Great deal, you are the only one on earth who could deliver this old manual. Thx so much and have nice chrismas
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Everything is OK. Owner's Manual I downloaded ( I get link for it by email).
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The only reason I gave this less than 4 stars, is because it shouldn't take 24 hrs to have the download available. I was surprised to find that I had to wait until the next day to be able to download the manual that I paid for.
The manual itself is the correct manual.
ProVocal
�
Type IV� White Paper
Appendix
Fig. 2 illustrates the mapping function in a different way. Input levels are shown on the left of the graph, while converted levels are shown on the right. Notice the mapping of large signal excursions to the 4dB �Type IV� Over Region.� One might question the validity of such an approach�trying to represent a lot of signal information within a smaller �space.� The reason why this is not only valid but makes a whole lot of sense is that the digital codes in a converter are linear, or evenly-spaced, meaning that each consecutive code represents the same change in voltage of the input signal. This implies that half of the digital codes are used to represent input signals whose voltage level is below 1/2 of the full-scale A/D input voltage, while the other half of the codes are used to represent signals above 1/2 of the full-scale A/D input voltage. This seems reasonable until you realize that 1/2 of the full-scale input is only 6dB below full-scale! So half of the codes are used to represent only the top 6 dB of signal information, while the other half are used to represent the remaining 80 to 110dB of signal information, depending on the quality of the converter. It seems not only reasonable, but also desirable, to utilize the increased signal resolution afforded by this density of digital codes to represent more input dynamic range in this region. Another advantage of the logarithmic mapping of our dbx Type IV� Conversion System is that it preserves the high-frequency detail of the signal in the overload region. Figs. 3a through 3d illustrate what happens when you overload an A/D converter without Type IV�. Fig. 3a shows an input signal having both low-frequency and high-frequency components. When the signal overloads, or clips, (Fig. 3b) at the A/D converter, a disproportionate amount of highfrequency signal information is lost compared with the low-frequency information. The low and high-frequency components of the signal are separated in Fig. 3c to illustrate this more clearly. As you can see, the low frequency signal simply gets distorted but maintains most of its signal characteristics, while sections of the high-frequency signal are completely lost! With dbx Type IV�, its mapping preserves high-frequency signal information, as illustrated in Fig. 3d, since the signal is confined within the Type IV� Over Region and never clips. The dashed line indicates the original input signal level. Below the Over Region no mapping occurs, while above this, mapping keeps all peaks of the signal below the A/D clip level, thus preserving the high-frequency content of the signal.
ProVocal� User Manual
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